4-STROKE EXHAUST

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4-Stroke Exhaust4-Stroke Exhaust

4-Stroke Dirt Bike Exhaust

It’s no secret that a properly selected aftermarket exhaust system can do wonders for your dirt bike. There isn’t an easier or faster way to add horsepower throughout your bike’s RPM range. When you want a new dirt bike exhaust system, Rocky Mountain ATV/MC is the best source around. We carry an extensive selection of dirt bike exhausts. Do you love FMF exhausts? So do we. Are you looking for a Yosh exhaust system? We’ve got several. How about a ProCircuit T-4 silencer? We carry it. Do you want a Moto Works exhaust? You’re in the right place. Interested in a Lexx MXe slip-on? Get it here at Rocky Mountain ATV/MC. If you own a 4-stroke dirt bike, a new exhaust system is a must have.

Whether you need a new exhaust system to boost your motocross racing performance or just a good silencer with a USFS-approved spark arrestor for enduro use, Rocky Mountain ATV/MC is the best place to find dirt bike exhaust pipes. We carry all of the leading brands: FMF, Yoshimura, Lexx, Pro Circuit, Motoworks and more. Exhausts are available in a variety of materials as well: titanium, stainless steel, aluminum and even carbon fiber. When you need a 4-stroke exhaust for your motorcycle, you can’t go wrong with these excellent exhaust systems. Whether you’re into motocross or just love a good trail, your dirt bike will really rip with these exhaust systems!

Latest Dirt Bike 4-Stroke Exhaust Reviews – You could win up to $500 for reviewing products!

  • Yoshimura RS-4 Stainless/Aluminum Slip-On

    Yoshimura RS-4 Stainless/Aluminum Slip-On

    Brock in ID

    Added power to my bike

    I have the full system and as soon as I put it on I could tell a power difference. It really opened up the top end. The look of it makes it even better. I did however have a popping noise in the cold if I am letting the motor brake for me. Awesome pipe all around

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  • FMF Power Core IV S/A Silencer

    FMF Power Core IV S/A Silencer

    Brian in CA

    Great product from FMF as always.

    Bought this for my 250x and it made a big difference with a jd jet kit and no toil air filter. The only thing is it’s really loud and the baffle to quiet it is always sold out. Which should let you how loud it is. Hey the Q unless you like it loud.

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  • FMF Stainless Steel Megabomb Header Pipe

    FMF Stainless Steel Megabomb Header Pipe

    Colton in MN

    Good product with easy return

    First one showed up with a hole that one of the welds burned through, rocky sent a shipping label and got a new one for me right away.

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  • FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

    FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

    PAUL in CA

    Great Power

    I needed a spark arrestor and I purchased this one since the aluminum one was on back order and as always, sound is great and not too loud and provides excellent power throughout. I never rode the bike with the stock muffler so I cannot compare it but FMF always delivers power gains.

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  • FMF Power Bomb Header Pipe

    FMF Power Bomb Header Pipe

    Cory in WA

    Awesome sound and looks!

    Awesome performance and looks! Great fit and function! Love these headers!

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  • Yoshimura RS-9D Stainless/Aluminum Full System

    Yoshimura RS-9D Stainless/Aluminum Full System

    Cory in WA

    Amazing quality and performance. Sounds and looks a...

    Amazing exhaust system! Looks great and sounds awesome! Sounds clips of this exhaust does not do this system justice. It has exceeded my expectations on quality of workmanship and detail. On top of all of that it was super easy to install.

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